DE3002763A1 - Refractory mass based on dry quartz or silica grains - plus binder which decomposes when heated to form only silica - Google Patents
Refractory mass based on dry quartz or silica grains - plus binder which decomposes when heated to form only silicaInfo
- Publication number
- DE3002763A1 DE3002763A1 DE19803002763 DE3002763A DE3002763A1 DE 3002763 A1 DE3002763 A1 DE 3002763A1 DE 19803002763 DE19803002763 DE 19803002763 DE 3002763 A DE3002763 A DE 3002763A DE 3002763 A1 DE3002763 A1 DE 3002763A1
- Authority
- DE
- Germany
- Prior art keywords
- silica
- binder
- heated
- refractory
- refractory mass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000011230 binding agent Substances 0.000 title claims abstract description 20
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 18
- 239000010453 quartz Substances 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000007669 thermal treatment Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 150000002894 organic compounds Chemical group 0.000 claims description 2
- 239000011449 brick Substances 0.000 abstract description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 2
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 2
- 239000004927 clay Substances 0.000 abstract description 2
- 239000004571 lime Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 description 14
- 229910052681 coesite Inorganic materials 0.000 description 5
- 229910052906 cristobalite Inorganic materials 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 229910052682 stishovite Inorganic materials 0.000 description 5
- 229910052905 tridymite Inorganic materials 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- -1 ethyl silicate Chemical class 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
- C04B35/6316—Binders based on silicon compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/6325—Organic additives based on organo-metallic compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
Feuerfes tmasse Refractory
Die Erfindung betrifft eine Feuerfestmasse mit einem Trockenstoff auf Quarzbasis in einer Körnung von O bis 7 mm.The invention relates to a refractory mass with a drying agent based on quartz with a grain size of 0 to 7 mm.
Bei derartigen bekannten Feuerfestmassen, wie sie insbesondere zur Zustellung von Induktionsöfen und vergleichbaren Schmelzeinrichtungen eingesetzt werden, ist dem Trockenstoff ein Sintermittel zugesetzt. Hierdurch hat man eine sogenannte Trockenstoffmasse zur Verfügung, die trocken eingerüttelt oder durch Vibration verdichtet wird, wobei man beispielsweise bei der Neuzustellung von rnduktionsöfen Schablonen einsetzen muß, die mit dem Ofengerüst einen Ringraum bilden, in den die rockenstoffmasse eingerüttelt wird. Durch ein nachfolgendes Sintern bei entsprechend hohen Temperaturen, normalerweise mit einem Verlust der eingesetzten Schablone verbunden, kommt es dann zur Aushärtung der Feuerfestmasse. Die beim Einrütteln oder Verdichten durch Vibration erreichbare Dichte bei der Zustellung der Öfen liegt bei maximal 2,1 bis 2,15 g/cm3.In such known refractory masses, as they are in particular for Infeed of induction furnaces and comparable melting equipment used a sintering agent is added to the drying agent. This gives you one So-called dry matter is available, which is shaken dry or through Vibration is compressed, for example when relining induction furnaces Must use stencils that form an annular space with the furnace frame in which the rockenstoffstoff is shaken. By a subsequent sintering at accordingly high temperatures, usually associated with loss of the stencil used, the refractory mass then hardens. The one when vibrating or compacting The maximum density that can be achieved by vibration when lining the ovens is 2.1 to 2.15 g / cm3.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Feuerfestmasse der gattungsgemäßen Art zu schaffen, die aufgrund ihrer Zusammensetzung das Erreichen einer höheren mechanischen Festigkeit und Feuerfestigkeit bei erheblich vereinfachter Verarbeitung ermöglicht.The present invention is based on the object of a refractory material of the generic type to create the achievement due to their composition a higher mechanical strength and fire resistance with considerably simplified Processing enables.
Die erfindungsgemäße Lösung besteht darin, daß dem Trockenstoff ein flüssiges Bindemittel zugesetzt ist, das nach einer thermischen Behandlung nur Kieselsäure als Feststoff hinterläßt.The solution according to the invention is that the dry matter a Liquid binder is added, which after thermal treatment only contains silica leaves as a solid.
Da der Trockenstoff auf Quarzbasis weitestgehend aus reiner Kieselsäure besteht - der Wert liegt bei 99,1 % SiO2 - und da das flüssige Bindemittel ausschließlich ebenfalls nur Kieselsaure SiO2 hinterläßt, das dann ein festes Bindemittel zwischen den Quarzkörnern ergibt, ergibt sich eine außerordentlich hohe mechanische Festigkeit sowie eine hohe Feuerfestigkeit. Darüber hinaus geschieht die thermische Behandlung des flüssigen Bindemittels bei Temperaturen, die all die Probleme, die sich bislang aus dem Sintern oder dem Brennen derartiger Feuerfestmassen ergeben haben, völlig entfallen lassen.As the quartz-based dry matter consists largely of pure silica consists - the value is 99.1% SiO2 - and there is only the liquid binder likewise only silicic acid SiO2 leaves behind, which then forms a solid binding agent between the quartz grains results in an extremely high mechanical strength as well as high fire resistance. In addition, there is thermal treatment of the liquid binder at temperatures that have all the problems that have arisen so far have resulted from the sintering or firing of such refractory masses, completely omit.
Das Bindemittel kann eine organische Verbindung mit durch Erwärmung zerstörbarem organischen Anteil (z.B.The binder can be an organic compound with by heating destructible organic content (e.g.
Kieselsäureester wie Äthylsilikat, Organosole, Silane, Silicone) oder eine wässrige Lösung (z.B. Kieselsol) sein.Silicic acid esters such as ethyl silicate, organosols, silanes, silicones) or be an aqueous solution (e.g. silica sol).
Als Beispiel einer derartigen Feuerfestmasse ist eine Zusammensetzung aus 96 % Trockenstoff auf Quarzbasis in einer Körnung von 0 bis 7 mm, vorzugsweise von 0 bis 5 mm, und 4 » Athylsilikat oder Kieselsol als flüssigem Bindemittel zu nennen.An example of such a refractory mass is a composition made of 96% dry matter based on quartz in a grain size from 0 to 7 mm, preferably from 0 to 5 mm, and 4 »ethylsilicate or silica sol as a liquid Mention binders.
Bevorzugte Anwendungsbereiche und sich dabei aus der erfindungsgemäßen Feuerfestmasse ergende Vorteile sind folgende: Bei der Neuzustellung von Induktionsöfen jedweder Art wird die beschriebene Feuerfestmasse nicht wie die bislang hier eingesetzte Trockenstoffmasse trokken eingerüttelt oder durch Vibration trocken verdichtet, sondern gestampft, weil das flüssige Bindemittel ein ausreichendes Verdichten durch Einrütteln oder Vibrieren behindert. Durch das Stampfen der 3 Feuerfestmasse ist eine Verdichtung bis zu 2,2 gXcm3 zu erreichen. Die gegenüber der bislang erreichbaren Verdichtung erreichbare Erhöhung von 0,05 bis 0,l 3 g/cm3 ist verarbeitungstechnisch und auch im Hinblick auf die gewünschte hohe Festigkeit des Fertigproduktes beachtlich. Es kann des weiteren bei der Neuzustellung von Öfen jeglicher Art bedenkenfrei mit einfachen und im Grunde genommen beliebigen und jederzeit wieder zu verwendenden Schablonen gearbeitet werden, weil die Ausfällung der Kieselsäure zur Erzeugung der festen Bindung zwischen den Quarzkörnern des Trockenstoffes bei Temperaturen erfolgt, die ohne jeden schädigenden Einfluß auf die Schablone sind. Nachdem die Bindung erreicht ist, wird die Schablone einfach aus dem Ofen genommen. Insbesondere entfällt das bei der Zustellung von Induktionsöfen bislang erforderliche Sintern.Preferred areas of application and are derived from the inventive The advantages of refractory mass are as follows: When relining induction furnaces The refractory compound described is not of any kind like the one previously used here Dry matter vibrated dry or compacted dry by vibration, but tamped because the liquid binder is sufficiently compacted by Shaking or vibrating is obstructed. By pounding the 3 refractory mass is to achieve a compression of up to 2.2 gXcm3. Compared to the previously achievable Compaction achievable increase of 0.05 to 0.13 g / cm3 is processing technology and also considerable with regard to the desired high strength of the finished product. It can also be used without hesitation when reloading ovens of any kind simple and basically arbitrary and can be used again at any time Stencils are worked because of the precipitation of the silica used to generate it the firm bond between the quartz grains of the dry matter at temperatures without any damaging influence on the stencil. after the When binding is achieved, the stencil is simply removed from the oven. In particular the sintering that was previously required for the lining of induction furnaces is no longer necessary.
Es versteht sich, d eine derartige Feuerfestmasse mit erheblichen) Vorteil auch zu jeglichen Reparaturarbeiten im hier betroffenen Feuerfestbereich eingesetzt werden kann.It goes without saying that such a refractory mass with considerable) Advantage also for any repair work in the affected refractory area can be used.
Die besondere hohe mechanische Festigkeit und die hohe Feuerfestigkeit resultieren aus der reinen Kieselsäurebindung, die. nach Aufspaltung des flüssigen Bindemittels verbleibt.The particularly high mechanical strength and the high fire resistance result from the pure silica bond, the. after splitting the liquid Binder remains.
Der Einsatzbereich der edindungsgemäßen Feuerfestmasse erstreckt sich ferner vom Bereich einerseits ganz einfacher Silikasteine bis zur Herstellung komplizierter vorgefertigter Feuerfestteile. Da nämlich der Trockenstoff praktisch aus reiner Kieselsäure besteht (99,l % SiO2) und da das bindemittel -nur SiO2 hinterläßt, sind die aus dieser Feuerfestmasse hergestellten Silikasteine und die daraus hergestellten komplizierten Feuerfestteile den bisherigen Teilen und Steinen erheblich überlegen, weil beispielsweise Silikasteine bislang immer nur eine Kalk- oder Tonbindung hatten und in beiden Fällen diese Bestandteile das SiO2-Gerüst mechanisch und auch in seinen Feuerfestigkeitseigenschaften erheblich beeinträchtigt haben. Darüber hinaus ermöglichen die vorstehend genannten Eigenschaften der Feuerfestmasse aufgrund der erzielbaren Verdichtbarkeit und im Hinblick darauf, daß ein Brennen und/oder Sintern völlig entfällt, in denkbar einfacher Weise die Verwirklichung auch in ihrer Raumform komplizierter Feuerfestteile, wie sie dann als vorgefertigte Teile im euerfestbereich weiterverarbeitet werden können.The field of application of the inventive refractory mass extends also from the area on the one hand very simple silica stones to the production of more complicated ones prefabricated refractory parts. Because the dry matter is practically pure Silica consists of (99.1% SiO2) and since the binder leaves only SiO2 behind the silica bricks made from this refractory mass and those made from it Complicated refractory parts are considerably superior to previous parts and bricks, because until now, for example, silica bricks have only ever had a lime or clay bond and in both cases these components mechanically and also in its SiO2 framework Have significantly impaired fire resistance properties. In addition, enable the aforementioned properties of the refractory mass due to the achievable Compressibility and in view of the fact that firing and / or sintering is complete omitted, the realization is also more complicated in its spatial shape in a very simple way Refractory parts, as they are then processed as prefabricated parts in the refractory area can be.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803002763 DE3002763A1 (en) | 1980-01-26 | 1980-01-26 | Refractory mass based on dry quartz or silica grains - plus binder which decomposes when heated to form only silica |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803002763 DE3002763A1 (en) | 1980-01-26 | 1980-01-26 | Refractory mass based on dry quartz or silica grains - plus binder which decomposes when heated to form only silica |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3002763A1 true DE3002763A1 (en) | 1981-07-30 |
Family
ID=6092979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19803002763 Withdrawn DE3002763A1 (en) | 1980-01-26 | 1980-01-26 | Refractory mass based on dry quartz or silica grains - plus binder which decomposes when heated to form only silica |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3002763A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019001214A1 (en) * | 2019-02-20 | 2020-08-20 | Intocast Ag | Refractory compounds and binders therefor, processes for their production and use |
| WO2020169772A2 (en) | 2019-02-20 | 2020-08-27 | Intocast Ag | Refractory compound and binder therefor, method for the production and use thereof |
-
1980
- 1980-01-26 DE DE19803002763 patent/DE3002763A1/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019001214A1 (en) * | 2019-02-20 | 2020-08-20 | Intocast Ag | Refractory compounds and binders therefor, processes for their production and use |
| WO2020169772A2 (en) | 2019-02-20 | 2020-08-27 | Intocast Ag | Refractory compound and binder therefor, method for the production and use thereof |
| WO2020169772A3 (en) * | 2019-02-20 | 2020-11-12 | Intocast Ag | Refractory compound and binder therefor, method for the production and use thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8139 | Disposal/non-payment of the annual fee |